Presser foot



June 10 1924.

1,497,395 E N. WEBB PRESSER FOOT Filed Feb. 16, 1932 Patented June 10,1924.

UNITED STATES ELLIS N. WEBB, F GENEVA, NEW YORK.

PRESSER FOOT.

Application filed February 16, 1922.

To all whom it may concern Be it known that I, ELLIS N. VVEBB, a citizenof the United States, residing at Geneva, in the county of Ontario andState of New York, have invented a new and useful Presser Foot of whichthe following is a specification.

This invention relates to a Presser foot designed primarily for use onout sole stitching machines such as used by shoe repairmen.

One of the objects of the invention is to provide a resser foot whichwill hold the knife adjustably whereby it is possible to keep the pointof the knife in perfect alignment with the awl and the needle.

Another object is to provide means whereby the knife can be adjustedlaterally so as to compensate for any differences in the positioning ofthe point of the awl due to the particular way in which the awl issharpene-d.

Another object is to provide a presser foot which will hold the point ofthe knife closer to the awl than has heretofore been possible and whichwill hold the knife firmly while in operation.

A. further object isto provide a presser foot which prolongs the life ofthe knife because it is possible for the operator to keep the originalbevel on the cutting point and thus make a perfect groove at all timesand with the minimum wear on the cutting tool.

Another object is to provide a structure of this character which can bereached readily at all times for the purpose of making adjustments orfor disconnecting the parts.

With the foregoing and other objects in View which will appear as thedescription proceeds, the invention resides in the com bination andarrangement of parts and in the details of construction hereinafterdescribed and claimed. it being understood that, within the scope ofwhat is claimed, changes in the precise embodiment of the inventionshown can be made without departing from the spirit of the invention.

In the accompanying drawings the preferred form of the invention hasbeen shown.

In said drawings- Figure 1 is a front elevation of the presser foot andthe knife engaged thereby.

Figure 2 is a side elevation of the strum ture shown in Figure 1.

Figure 3 is a plan view.

Serial No. 537,133.

Figure 4 is a bottom view.

Figure 5 is a front elevation of the presser foot and the clamp combinedtherewith.

Figure 6 is an elevation of the inner side of the presser foot andclamp.

Referring to the figures by characters of reference 1 designates theholding block of the presser foot, the same being provided with screws 2or the like for attaching it to a machine. This holding block has spacedears 3 extending from the outer end thereof and designed to receivebetween them an ear 4; projecting upwardly from the presser foot 5. Adowel 6 is extended laterally from the presser foot and is adapted toenter an opening 7 formed within the block 1. Projecting rearwardly fromthe presser foot is an ear 8 and a similar ear 9 is extended rearwardlyfrom the block 1. The base 10 of the presser foot is adapted to rideunder the block 1 and for the purpose of shifting the presser footrelative to the block an adjusting screw 11 is provided. This screw isswiveled within the ear 9, there being an annular groove 12 in the screwfor the reception of a retaining pin 13. The threaded portion of thescrew engages the ear 8. A kerf 14 is formed in the free end of thescrew so that by inserting a screw driver thereinto the screw can berotated and will thus shift the presser foot toward or from the block 1and correspondingly move the ear 4 between the ears 3. The opening inear 8 for the reception of the screw 11 has been shown at 15 in Figure6. For the purpose of holding the screw 11 against rotation a set screw16 is extended into the ear 9 so as to engage screw 11. Thus accidentalshifting of the parts subsequent to adjustment can be prevented.

An inclined angular groove 17 is formed in the outer side of the presserfoot 5 and registers with a similar groove 18 formed in the inner sideof a clamp 19. This clamp is adapted to engage the outer face of thepresser foot 5 and has an ear 2O movable between the ears 3. A knife 21,angular in cross section, is adapted to be received by the two grooves17 and 18. The lower portion of the knife has its sides and end beveledas at 22 so as to provide a cutting edge 23 and a cutting point 24:. Thethickness of the angular portion of the knife 21 is slightly greaterthan the combined depths of the two grooves 17 and 18. Thus by means ofa clamping screw 25 extending through the clamp 19 and engaging thepresser foot 5, the knife/21 can be held tightly between the presserfoot 5 and the clamp 19. This clamping of the knife is efiected afterthe knife has been adjusted longitudinally to project its point adesired distance below the base 10. As soon as this adjustment has beeneffected the presser foot can be adjusted laterally relative to theblock 1 so as to bring the point of the knife into proper alignment withthe awl and needle.

lVhat is claimed is 1. The combination with a holding block, of apresser foot having a base movable under the block, spaced earsextending from the block, an ear on the presser foot slidable betweenthe ears, screw threaded means for minutely adjusting the presser footlaterally toward or from the block, a clamp, there being inclinedangular grooves in the meeting faces of the presser foot and clamp, saidgrooves registering, an elongated knife angular in cross section seatedin the registered grooves, screw threaded means for adusting the clamprelative to the presser foot, to grip the knife. said knife having abeveled end terminating in a cutting point.

2. The combination with a holding block having spaced ears extendingfrom the upper portion thereof and a laterally extending ear, of apresser foot slidable under the spaced ears and having a laterallyprojecting base slidable under the holding block, an n standing ear uponthe resser foot and slidalilebetween the spaced ears, a clamping block,a. laterally extending ear upon the presser foot, an adjusting screwconnecting said ear to the laterally extending ear on the block forminutely adjusting the presser foot laterally relative to the block,said resser foot and clamp having matching inclined grooves in theirmeeting faces, an elongated knife angular in cross section seated withinthe groove and having beveled faces at one end terminating in a cuttingpoint, and an adjusting screw engaging the clamp and presser foot forbinding them upon the knife, said knife being held by friction in thegroove.

The combination with a presscr foot. having a base, and means forminutely adjusting the presser foot laterally, of a clamp, said clampand presser foot having matching inclined angular grooves, an elongatedknife angular in cross section seated in the groove and projectingupwardly and downwardly beyond the grooves, the lower end of the knifehaving its sides and end beveled to provide a cutting point and acutting edge, means for minutely adjusting the clamp relative to thepresser foot for binding them upon the knife.

4. The combination with a holding block for fixed attachment to astitching machine, of a resser foot having a base slidable under theholding block, cooperating means upon the block and presser foot forbold ing said presser foot against tilting move ment relative to theholding block, an adjusting screw engaging the presser foot and holdingblock for minutely adjusting said presser foot laterally relative to theblock, a clamp, said clamp and presser foot having matching inclinedgrooves in their meeting faces, an elongated knife angular in crosssection and seated in the grooves, one end of the knife having its sideand end beveled providing a cutting point and a cutting edge adapted tobe positioned close to the awl of a stitching machine, and an adjustingscrew engaging the presser foot and clamp for gripping the knife betweensaid presser foot and clamp to hold it against longitudinaldisplacement.

In testimony that I claim the foregoing as my own, I have hereto aflixedmy signature in the presence of two Witnesses.

ELLIS WEBB. Witnesses:

RACHEL Acon, G, EVERETT Drrmeas.

